19521880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{617}}^1$

素因数の和:748

約数の個数: 64

約数和(自身を含む): 50725440

約数和(自身を除く): 31203560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 113, 140, 226, 280, 452, 565, 617, 791, 904, 1130, 1234, 1582, 2260, 2468, 3085, 3164, 3955, 4319, 4520, 4936, 6170, 6328, 7910, 8638, 12340, 15820, 17276, 21595, 24680, 31640, 34552, 43190, 69721, 86380, 139442, 172760, 278884, 348605, 488047, 557768, 697210, 976094, 1394420, 1952188, 2440235, 2788840, 3904376, 4880470, 9760940, 19521880]

約数ペア:

[(1, 19521880), (2, 9760940), (4, 4880470), (5, 3904376), (7, 2788840), (8, 2440235), (10, 1952188), (14, 1394420), (20, 976094), (28, 697210), (35, 557768), (40, 488047), (56, 348605), (70, 278884), (113, 172760), (140, 139442), (226, 86380), (280, 69721), (452, 43190), (565, 34552), (617, 31640), (791, 24680), (904, 21595), (1130, 17276), (1234, 15820), (1582, 12340), (2260, 8638), (2468, 7910), (3085, 6328), (3164, 6170), (3955, 4936), (4319, 4520)]